I appreciate the quick response. That gives me hope. My major problem is that the age difference is large and I can see that they will provide me lots of challenges. I heard some people had to be interviewed more than 4 times to really satisfied them to get the approval. Since they didn't comment on any missing required documentation and only requested the relationships and family tree documentation, I assume I have gathered all required documents.
Have you received the immigration visa approval? How many times did you have to interview? I wonder what else they can come up with a challenge that is not described as part of the required filing documents. I wish I can be more prepared with what they need to reduce the number of interviews needed. When we stook in line for the first interview, there were 200 plus people in line. If half gets declined, they would be all waiting for a second interview. Trying to get an appointment online is a really hard task.